* PLEASE ANSWER THIS QUESTION *
what is the answer? Show explanation.

Answer:
They should all be 90.
Step-by-step explanation:
This is because lines n and m are perpendicular and perpendicular lines make 90 degree angles.
Please comment if you need me to elaborate. ^_^
Answer:
Step-by-step explanation:
The other answers cannot possibly be correct, and the angles look to be 90 degrees.
Hope this helps :)